Energy Savings in the Conversion of CO2 to Fuels using an Electrolytic Device

Authors

  • Dr. Manuela Bevilacqua,

    Corresponding author
    1. Institute of Organometallic Chemistry (ICCOM), National Research Council (CNR) via Madonna del Piano 10, I-50019 Sesto Fiorentino (FI) (Italy)
    • Institute of Organometallic Chemistry (ICCOM), National Research Council (CNR) via Madonna del Piano 10, I-50019 Sesto Fiorentino (FI) (Italy)===

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  • Dr. Jonathan Filippi,

    1. Institute of Organometallic Chemistry (ICCOM), National Research Council (CNR) via Madonna del Piano 10, I-50019 Sesto Fiorentino (FI) (Italy)
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  • Dr. Alessandro Lavacchi,

    1. Institute of Organometallic Chemistry (ICCOM), National Research Council (CNR) via Madonna del Piano 10, I-50019 Sesto Fiorentino (FI) (Italy)
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  • Dr. Andrea Marchionni,

    1. Institute of Organometallic Chemistry (ICCOM), National Research Council (CNR) via Madonna del Piano 10, I-50019 Sesto Fiorentino (FI) (Italy)
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  • Dr. Hamish A. Miller,

    1. Institute of Organometallic Chemistry (ICCOM), National Research Council (CNR) via Madonna del Piano 10, I-50019 Sesto Fiorentino (FI) (Italy)
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  • Dr. Werner Oberhauser,

    1. Institute of Organometallic Chemistry (ICCOM), National Research Council (CNR) via Madonna del Piano 10, I-50019 Sesto Fiorentino (FI) (Italy)
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  • Dr. Erik Vesselli,

    1. Physics Department and CENMAT, University of Trieste via Valerio 2, I-34127 Trieste (Italy)
    2. IOM-CNR, Laboratorio TASC, AREA Science Park, S.S. 14 Km 163.5, I-34149 Trieste (Italy)
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  • Dr. Francesco Vizza

    Corresponding author
    1. Institute of Organometallic Chemistry (ICCOM), National Research Council (CNR) via Madonna del Piano 10, I-50019 Sesto Fiorentino (FI) (Italy)
    • Institute of Organometallic Chemistry (ICCOM), National Research Council (CNR) via Madonna del Piano 10, I-50019 Sesto Fiorentino (FI) (Italy)===

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Abstract

We describe the realization of an electrolyzer for the electroreduction of CO2 to useful hydrocarbons and carboxylates such as CH4, C2H4, and HCOO-. The device uses a molecular copper phthalocyanine-based cathode, an anion exchange membrane, and a nanostructured Pd@Ti anode. The key advantage of this device is the exploitation of anodic alcohol oxidation instead of water oxidation. The lower operating cell potential due to the presence of ethanol leads to a net reduction in energy consumption, from 130 kWh to 77 kWh (per kg of hydrocarbon product mixture), in comparison to the cell operating with oxygen evolution.

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